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      1 /*
      2 * Copyright (C) 2016 The Android Open Source Project
      3 *
      4 * Licensed under the Apache License, Version 2.0 (the "License");
      5 * you may not use this file except in compliance with the License.
      6 * You may obtain a copy of the License at
      7 *
      8 *      http://www.apache.org/licenses/LICENSE-2.0
      9 *
     10 * Unless required by applicable law or agreed to in writing, software
     11 * distributed under the License is distributed on an "AS IS" BASIS,
     12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 * See the License for the specific language governing permissions and
     14 * limitations under the License
     15 */
     16 
     17 package com.android.tv.dvr.ui.list;
     18 
     19 import android.os.Bundle;
     20 import android.support.v17.leanback.app.DetailsFragment;
     21 import android.support.v17.leanback.widget.ClassPresenterSelector;
     22 import android.view.LayoutInflater;
     23 import android.view.View;
     24 import android.view.ViewGroup;
     25 import android.widget.TextView;
     26 
     27 import com.android.tv.ApplicationSingletons;
     28 import com.android.tv.R;
     29 import com.android.tv.TvApplication;
     30 import com.android.tv.dvr.DvrDataManager;
     31 import com.android.tv.dvr.DvrScheduleManager;
     32 import com.android.tv.dvr.data.ScheduledRecording;
     33 
     34 /**
     35  * A  base fragment to show the list of schedule recordings.
     36  */
     37 public abstract class BaseDvrSchedulesFragment extends DetailsFragment
     38         implements DvrDataManager.ScheduledRecordingListener,
     39         DvrScheduleManager.OnConflictStateChangeListener {
     40     /**
     41      * The key for scheduled recording which has be selected in the list.
     42      */
     43     public static final String SCHEDULES_KEY_SCHEDULED_RECORDING =
     44             "schedules_key_scheduled_recording";
     45 
     46     private ScheduleRowAdapter mRowsAdapter;
     47     private TextView mEmptyInfoScreenView;
     48 
     49     @Override
     50     public void onCreate(Bundle savedInstanceState) {
     51         super.onCreate(savedInstanceState);
     52         ClassPresenterSelector presenterSelector = new ClassPresenterSelector();
     53         presenterSelector.addClassPresenter(SchedulesHeaderRow.class, onCreateHeaderRowPresenter());
     54         presenterSelector.addClassPresenter(ScheduleRow.class, onCreateRowPresenter());
     55         mRowsAdapter = onCreateRowsAdapter(presenterSelector);
     56         setAdapter(mRowsAdapter);
     57         mRowsAdapter.start();
     58         ApplicationSingletons singletons = TvApplication.getSingletons(getContext());
     59         singletons.getDvrDataManager().addScheduledRecordingListener(this);
     60         singletons.getDvrScheduleManager().addOnConflictStateChangeListener(this);
     61         mEmptyInfoScreenView = (TextView) getActivity().findViewById(R.id.empty_info_screen);
     62     }
     63 
     64     @Override
     65     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     66             Bundle savedInstanceState) {
     67         View view = super.onCreateView(inflater, container, savedInstanceState);
     68         int firstItemPosition = getFirstItemPosition();
     69         if (firstItemPosition != -1) {
     70             getRowsFragment().setSelectedPosition(firstItemPosition, false);
     71         }
     72         return view;
     73     }
     74 
     75     /**
     76      * Returns rows adapter.
     77      */
     78     protected ScheduleRowAdapter getRowsAdapter() {
     79         return mRowsAdapter;
     80     }
     81 
     82     /**
     83      * Shows the empty message.
     84      */
     85     void showEmptyMessage(int messageId) {
     86         mEmptyInfoScreenView.setText(messageId);
     87         if (mEmptyInfoScreenView.getVisibility() != View.VISIBLE) {
     88             mEmptyInfoScreenView.setVisibility(View.VISIBLE);
     89         }
     90     }
     91 
     92     /**
     93      * Hides the empty message.
     94      */
     95     void hideEmptyMessage() {
     96         if (mEmptyInfoScreenView.getVisibility() == View.VISIBLE) {
     97             mEmptyInfoScreenView.setVisibility(View.GONE);
     98         }
     99     }
    100 
    101     @Override
    102     public View onInflateTitleView(LayoutInflater inflater, ViewGroup parent,
    103             Bundle savedInstanceState) {
    104         // Workaround of b/31046014
    105         return null;
    106     }
    107 
    108     @Override
    109     public void onDestroy() {
    110         ApplicationSingletons singletons = TvApplication.getSingletons(getContext());
    111         singletons.getDvrScheduleManager().removeOnConflictStateChangeListener(this);
    112         singletons.getDvrDataManager().removeScheduledRecordingListener(this);
    113         mRowsAdapter.stop();
    114         super.onDestroy();
    115     }
    116 
    117     /**
    118      * Creates header row presenter.
    119      */
    120     public abstract SchedulesHeaderRowPresenter onCreateHeaderRowPresenter();
    121 
    122     /**
    123      * Creates rows presenter.
    124      */
    125     public abstract ScheduleRowPresenter onCreateRowPresenter();
    126 
    127     /**
    128      * Creates rows adapter.
    129      */
    130     public abstract ScheduleRowAdapter onCreateRowsAdapter(ClassPresenterSelector presenterSelecor);
    131 
    132     /**
    133      * Gets the first focus position in schedules list.
    134      */
    135     protected int getFirstItemPosition() {
    136         for (int i = 0; i < mRowsAdapter.size(); i++) {
    137             if (mRowsAdapter.get(i) instanceof ScheduleRow) {
    138                 return i;
    139             }
    140         }
    141         return -1;
    142     }
    143 
    144     @Override
    145     public void onScheduledRecordingAdded(ScheduledRecording... scheduledRecordings) {
    146         if (mRowsAdapter != null) {
    147             for (ScheduledRecording recording : scheduledRecordings) {
    148                 mRowsAdapter.onScheduledRecordingAdded(recording);
    149             }
    150         }
    151     }
    152 
    153     @Override
    154     public void onScheduledRecordingRemoved(ScheduledRecording... scheduledRecordings) {
    155         if (mRowsAdapter != null) {
    156             for (ScheduledRecording recording : scheduledRecordings) {
    157                 mRowsAdapter.onScheduledRecordingRemoved(recording);
    158             }
    159         }
    160     }
    161 
    162     @Override
    163     public void onScheduledRecordingStatusChanged(ScheduledRecording... scheduledRecordings) {
    164         if (mRowsAdapter != null) {
    165             for (ScheduledRecording recording : scheduledRecordings) {
    166                 mRowsAdapter.onScheduledRecordingUpdated(recording, false);
    167             }
    168         }
    169     }
    170 
    171     @Override
    172     public void onConflictStateChange(boolean conflict, ScheduledRecording... schedules) {
    173         if (mRowsAdapter != null) {
    174             for (ScheduledRecording recording : schedules) {
    175                 mRowsAdapter.onScheduledRecordingUpdated(recording, true);
    176             }
    177         }
    178     }
    179 }